John Deere 670c 670ch 672ch Motor Grader Diagnostic Manual
tm1914 – C Series II Motor Graders Technical Manual
John Deere 670c 670ch 672ch 770c 770ch 772ch Motor Graders
TM1914-John-Deere-Motor-Graders-670C-670CH-672CH-770C-770CH-772CH-Series-II-Technical-Manual-Operation-and-Test
Foreword
Technical Information Feedback Form General Information
Safety
Operational Checkout Procedure
Engine
Theory Of Operation Diagnostic Information Adjustments
Tests
Electrical System
System Information System Diagrams
Sub-System Diagnostics References And Tests
Hydrostatic Front Wheel Drive (HFWD)
Theory Of Operation Diagnostic Information
Adjustments And Checks Tests
Power Train
Theory Of Operation Diagnostic Information Adjustments
Tests
Theory Of Operation Diagnose Malfunctions Adjustments
Tests
Heating And Air Conditioning
Theory Of Operation Diagnostic Information Tests
Foreword
Technical Information Feedback Form Section 9000: General Information
Group 01: Safety
Recognize Safety Information, Follow Safety Instructions, Operate Only If Qualified, Wear Protective Equipment, Avoid Unauthorized Machine Modifications, Inspect Machine, Stay Clear of Moving Parts, Avoid High-Pressure Fluids, Beware of Exhaust Fumes, Prevent Fires, Prevent Battery Explosions,.
Handle Chemical Products Safely, Dispose of Waste Properly, Prepare for Emergencies, Use Steps and Handholds Correctly, Start Only From Operator’s Seat, Use and Maintain Seat Belt, Prevent Unintended Machine Movement, Avoid Work Site Hazards, Keep Riders Off Machine Avoid Back over Accidents, Avoid Machine Tip Over.
John Deere 670c 670ch 672ch Motor Grader Diagnostic Manual
Operating or Traveling On Public Roads Inspect and Maintain ROPS, Add and Operate Attachments Safely Park And Prepare For Service Safely Service Cooling System Safely
Remove Paint Before Welding or Heating Make Welding Repairs Safely Drive Metal Pins Safely
Section 9005: Operational Checkout Procedure
Group 10: Operational Checkout Procedure
Complete Machine Operational Checkout
Section 9010: Engine
Group 05: Theory Of Operation
Supplement Support Manuals Surge Tank Operation
Air Intake and Exhaust System Operation—6081 Engine
Cold Start Theory of Operation 670C, 770C, 770CH, 772CH (670CH, 672CH S.N. —589368)
Group 15: Diagnostic Information
Diagnose Engine Malfunctions (670CH, 672CH S.N. —589368 And 770C, 770CH, 772CH) Diagnose Engine Malfunctions (670CH, 672CH S.N. 589369— )
Engine Cranks/Won’t Start or Starts Hard, Diagnostic Procedure (B1)—(670CH, 672CH, S.N. — 589368 And 770C, 770CH, 772CH)
Engine Does Not Develop Full Power, Diagnostic Procedure (B2)— 770CH, 772CH
Group 20: Adjustments
JT05801 Clamp-On Electronic Tachometer Installation Engine Belt Tensioner Spring Check
Fan Belt Tensioner Spring Check Adjust Engine Speed Linkage—670C
Adjust Engine Speed Linkage—670CH, 672CH, 770C, 770CH, 772CH
Primary Fuel Filter, Drain Valve—670C, 670CH, 672CH (S.N. —589368) Primary Fuel Filter, Drain Valve—670C, 670CH, 672CH (S.N. 589369—) Primary Fuel Filter, Drain Valve—770C, 770CH, 772CH
Bleed The Fuel System—670C, 670CH, 672CH Bleed The Fuel System—770C, 770CH, 772CH.
Group 25: Tests
Fuel Line Leakage Test
Air Intake System Leakage Test
Air Filter Restriction Indicator Switch Test
Intake Manifold Pressure (Turbocharger Boost PSI) and Wastegate Test Intake Manifold Pressure (Turbocharger Boost PSI) Test
Injection Pump Rack Position Voltage Test
Fuel Supply Pump Leakage Test—670C, 670CH, 672CH Fuel Pressure Test—770C, 770CH, 772CH
Throttle Potentiometer Test—670CH, 672CH, 770C, 770CH, 772CH